hai, can you help me to explain transport from Dongmen Street to Shekou Port?

You are advised to walk southwest around 500 yards to get to Laojie Metro Station first. Then take metro line 1 to Window of the World Station and transfer to line 2 to Shekou Port, Exit C. After arriving, walk south around 450 yards to find the destination. The whole way takes around an hour. It costs CNY 7 per person.
In addition, it will be convenient for you to take a ferry from Shekou Port to Macau Outer Harbour Ferry Terminal. The ferry schedules are 08:15, 09:45, 11:30, 14:30, 16:30 and 19:30. :)